package com.itheima.reggie.controller;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.OSSObject;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.AliOssPropertios;
import lombok.Value;
import lombok.extern.slf4j.Slf4j;

import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.UUID;

@RestController
@RequestMapping("/common")
@Slf4j
public class CommonController {

    @Autowired
    private AliOssPropertios aliOssPropertios;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) throws FileNotFoundException {

        // 填写Object完整路径，完整路径中不能包含Bucket名称，例如exampledir/exampleobject.txt。
        String objectName = file.getOriginalFilename();
        // 填写本地文件的完整路径，例如D:\\localpath\\examplefile.txt。
        // 如果未指定本地路径，则默认从示例程序所属项目对应本地路径中上传文件流。
        String filePath= "D:\\img\\" + objectName;

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(aliOssPropertios.getEndpoint(),
                aliOssPropertios.getAccessKeyId(), aliOssPropertios.getAccessKeySecret());

        try {
            InputStream inputStream = new FileInputStream(filePath);
            // 创建PutObjectRequest对象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(aliOssPropertios.getBucketName(), objectName, inputStream);
            // 设置该属性可以返回response。如果不设置，则返回的response为空。
            putObjectRequest.setProcess("true");
            // 创建PutObject请求。
            PutObjectResult result = ossClient.putObject(putObjectRequest);
            // 如果上传成功，则返回200。
            System.out.println(result.getResponse().getStatusCode());
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());

        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
        return R.success(file.getOriginalFilename());
    }

    @GetMapping("/download")
    public void download(HttpServletResponse response,String name){
        // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。
        String objectName = name;
        try {
            // 创建OSSClient实例。
            OSS ossClient = new OSSClientBuilder().build(aliOssPropertios.getEndpoint(),
                    aliOssPropertios.getAccessKeyId(), aliOssPropertios.getAccessKeySecret());
            // ossObject包含文件所在的存储空间名称、文件名称、文件元信息以及一个输入流。
            OSSObject ossObject = ossClient.getObject(aliOssPropertios.getBucketName(), objectName);
            IOUtils.copy(ossObject.getObjectContent(), response.getOutputStream());
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }

    }
}
